What kinds of lost things have you found in a public place?

I would say that I found a key by chance near my house. It happened when I was walking home, and I felt that something was under my shoe. So when I took my shoe off, I saw a key.

In my view, I think there are some kinds of lost things that I have found in public spaces. People are often aware of small items like a phone, earphones, or a wallet, but they can be careless and drop them in public spaces.